Year
2023
Degree Name
Doctor of Philosophy
Department
School of Mechanical, Materials, Mechatronic and Biomedical Engineering
Abstract
The interplay between iron- and titanium oxides has been studied, for a better understanding of how different amounts of titanium affects iron ore, for relevance in downstream ironmaking processes.
The oxidation of NZ ironsand as well as synthetic titanomagnetite (TTM) of three different compositions has been studied in air up to 1320°C. In-situ monitoring of mass gain and thermal response during oxidation (TGA-DSC), as well as ex-situ analysis of crystals phases (powder XRD) and microstructure (SEM) of samples after quenching from select oxidation temperature at deliberate time intervals. Crystal phases in the samples were mapped spatially using SEM- EBSD, and chemical composition using (SEM-EDS). This has enabled a detailed evaluation of the relationship between the growth of specific crystals and their relative chemical compositions.
Recommended Citation
Bjäreborn, Oscar, Pre-oxidation of New Zealand ironsand – Where does the titanium go?, Doctor of Philosophy thesis, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, 2023. https://ro.uow.edu.au/theses1/1880
Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.